Thomas "Tom" Eisner, the father of chemical ecology, accepts his National Medal of Science award in 1994 from President Bill Clinton for his "seminal contributions in the fields of insect behavior and chemical ecology, and for his international efforts on biodiversity." (Courtesy Photo)

Thomas "Tom" Eisner, the father of chemical ecology, accepts his National Medal of Science award in 1994 from President Bill Clinton for his "seminal contributions in the fields of insect behavior and chemical ecology, and for his international efforts on biodiversity." (Courtesy Photo)

Cornell University chemical ecologists and friends Tom Eisner (1929-2011) playing the piano and Jerry Meinwald (1927-2018) playing the flute. (Cornell University Photo)

Cornell University chemical ecologists and friends Tom Eisner (1929-2011) playing the piano and Jerry Meinwald (1927-2018) playing the flute. (Cornell University Photo)

This is the Asian citrus psyllid, a mottled brown insect about 3 to 4 millimeters long, or about the size of an aphid. Widespread throughout Southern California, it is now found in 26 of the state's 58 counties. (CDFA Photo)

This is the Asian citrus psyllid, a mottled brown insect about 3 to 4 millimeters long, or about the size of an aphid. Widespread throughout Southern California, it is now found in 26 of the state's 58 counties. (CDFA Photo)

UC Davis chemical ecologist Walter Leal has just discovered the sex pheromone of the Asian citrus psyillid. He has also discovered the sex pheromones of a number of other insects, including moths (background). (Photo by Kathy Keatley Garvey)

UC Davis chemical ecologist Walter Leal has just discovered the sex pheromone of the Asian citrus psyillid. He has also discovered the sex pheromones of a number of other insects, including moths (background). (Photo by Kathy Keatley Garvey)

Culex quinquefasciatus, the southern house mosquito,is known for transmitting the West Nile virus, but now the Zika virus has been detected in wild-caught C. quinquefasciatus in Recife, Brazil, the epicenter of the Zika epidemic. (Photo by Kathy Keatley Garvey)

Culex quinquefasciatus, the southern house mosquito,is known for transmitting the West Nile virus, but now the Zika virus has been detected in wild-caught C. quinquefasciatus in Recife, Brazil, the epicenter of the Zika epidemic. (Photo by Kathy Keatley Garvey)